Final answer:
Data-centric XML is hierarchically structured with a tree-like structure, utilizes tags and attributes defined by schemas, is often used for storage and encoding, and helps in creating DTDs.
Step-by-step explanation:
Data-centric XML is hierarchically structured, meaning it is arranged in a way where elements can contain other nested elements, creating a parent-child relationship. This hierarchical structure lends itself to a tree-like structure, which is integral to XML's design and data management approach.
In XML, there are a great number of tags and attributes that are used to define elements and provide metadata about the data contained within an XML document. These are defined by schemas, which are blueprints that describe the legal structure, elements, and attributes of an XML document.
XML is often used for storage and encoding information. It is a tool for structuring data in a way that both machines and humans can read.
XML is also used to create DTDs (Document Type Definitions), which are specific declarations that provide a list of the elements, attributes, entities, and notations used in the document, ensuring that it adheres to the standards of XML formatting.